Are there certain anatomical features that make using dermal fillers under the eyes totally untenable?

I have had 4 or so experiences with under eye fillers over 10 years - 1 great 3 terrible, with raised areas, lumps, bags, and "pillows" under the eyes. Got talked into doing it again with terrile results (restalyne was used, under the muscle, she says) 1. Am I just a bad candidate for fillers here or was this a function of her technique or the product used ? She is saying that I have a choice of hollow or protuberant under my eyes.. Do you agree generally?